Having checked the doors were closed, and _____all the lights were off, the boy opened the door to his bedroom.
#74300
A
why
B
that
C
when
D
where
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There is a mountain_____the top is always covered with snow.
#73714
A
whos
B
of which
C
its
D
that
I cannot hear the professor clearly as there is too much noise _____ I am sitting.
#67482
A
that
B
where
C
who
D
what
They told me they had just arrived at the last destination ________ you went to last year.
#67120
A
where
B
that
C
when
D
which
His father got him a job in a bank but soon it became clear ______ he was not fit for that kind of work．
#68516
A
why
B
what
C
whether
D
that
It is uncertain____side effect the medicine will bring about，although about two thousand patients have taken it.
#67381
A
that
B
what
C
how
D
whether